String :: isEmpty - Determines whether the string contains no data.
The function returns true, when the string is null or contains an empty string data area. In contrast to isNull() an empty string may contain information about coding type.
odaba::String().isEmpty(); // returns true
odaba::String("").isEmpty(); // returns true
odaba::String("x").isEmpty(); // returns false
odaba::String(false).isEmpty(); // returns false
Return value: Success ( bool )
The value is true when the function was executed successfully. Otherwise the value is set to false.